ppi_resolution.m

- (NSString *)ppi
{
    NSString *ppi = @"";
    if ([self.deviceName isEqualToString:@"iPod1,1"] ||
        [self.deviceName isEqualToString:@"iPod2,1"] ||
        [self.deviceName isEqualToString:@"iPod3,1"] ||
        [self.deviceName isEqualToString:@"iPhone1,1"] ||
        [self.deviceName isEqualToString:@"iPhone1,2"] ||
        [self.deviceName isEqualToString:@"iPhone2,1"]) {
        
        ppi = @"163";
    }
    else if ([self.deviceName isEqualToString:@"iPod4,1"] ||
             [self.deviceName isEqualToString:@"iPhone3,1"] ||
             [self.deviceName isEqualToString:@"iPhone3,3"] ||
             [self.deviceName isEqualToString:@"iPhone4,1"]) {
        
        ppi = @"326";
    }
    else if ([self.deviceName isEqualToString:@"iPhone5,1"] ||
             [self.deviceName isEqualToString:@"iPhone5,2"] ||
             [self.deviceName isEqualToString:@"iPhone5,3"] ||
             [self.deviceName isEqualToString:@"iPhone5,4"] ||
             [self.deviceName isEqualToString:@"iPhone6,1"] ||
             [self.deviceName isEqualToString:@"iPhone6,2"]) {
        
        ppi = @"326";
    }
    else if ([self.deviceName isEqualToString:@"iPhone7,1"]) {
        ppi = @"401";
    }
    else if ([self.deviceName isEqualToString:@"iPhone7,2"]) {
        ppi = @"326";
    }
    else if ([self.deviceName isEqualToString:@"iPad1,1"] ||
             [self.deviceName isEqualToString:@"iPad2,1"]) {
        ppi = @"132";
    }
    else if ([self.deviceName isEqualToString:@"iPad3,1"] ||
             [self.deviceName isEqualToString:@"iPad3,4"] ||
             [self.deviceName isEqualToString:@"iPad4,1"] ||
             [self.deviceName isEqualToString:@"iPad4,2"]) {
        ppi = @"264";
    }
    else if ([self.deviceName isEqualToString:@"iPad2,5"]) {
        ppi = @"163";
    }
    else if ([self.deviceName isEqualToString:@"iPad4,4"] ||
             [self.deviceName isEqualToString:@"iPad4,5"]) {
        ppi = @"326";
    }
    else {
        ppi = @"264";
    }
    return ppi;
}

- (CGSize)resolution
{
    CGSize resolution = CGSizeZero;
    if ([self.deviceName isEqualToString:@"iPod1,1"] ||
        [self.deviceName isEqualToString:@"iPod2,1"] ||
        [self.deviceName isEqualToString:@"iPod3,1"] ||
        [self.deviceName isEqualToString:@"iPhone1,1"] ||
        [self.deviceName isEqualToString:@"iPhone1,2"] ||
        [self.deviceName isEqualToString:@"iPhone2,1"]) {
        
        resolution = CGSizeMake(320, 480);
    }
    else if ([self.deviceName isEqualToString:@"iPod4,1"] ||
             [self.deviceName isEqualToString:@"iPhone3,1"] ||
             [self.deviceName isEqualToString:@"iPhone3,3"] ||
             [self.deviceName isEqualToString:@"iPhone4,1"]) {
        
        resolution = CGSizeMake(640, 960);
    }
    else if ([self.deviceName isEqualToString:@"iPhone5,1"] ||
             [self.deviceName isEqualToString:@"iPhone5,2"] ||
             [self.deviceName isEqualToString:@"iPhone5,3"] ||
             [self.deviceName isEqualToString:@"iPhone5,4"] ||
             [self.deviceName isEqualToString:@"iPhone6,1"] ||
             [self.deviceName isEqualToString:@"iPhone6,2"]) {
        
        resolution = CGSizeMake(640, 1136);
    }
    else if ([self.deviceName isEqualToString:@"iPhone7,1"]) {
        resolution = CGSizeMake(1080, 1920);
    }
    else if ([self.deviceName isEqualToString:@"iPhone7,2"]) {
        resolution = CGSizeMake(750, 1334);
    }
    else if ([self.deviceName isEqualToString:@"iPad1,1"] ||
             [self.deviceName isEqualToString:@"iPad2,1"]) {
        resolution = CGSizeMake(768, 1024);
    }
    else if ([self.deviceName isEqualToString:@"iPad3,1"] ||
             [self.deviceName isEqualToString:@"iPad3,4"] ||
             [self.deviceName isEqualToString:@"iPad4,1"] ||
             [self.deviceName isEqualToString:@"iPad4,2"]) {
        resolution = CGSizeMake(1536, 2048);
    }
    else if ([self.deviceName isEqualToString:@"iPad2,5"]) {
        resolution = CGSizeMake(768, 1024);
    }
    else if ([self.deviceName isEqualToString:@"iPad4,4"] ||
             [self.deviceName isEqualToString:@"iPad4,5"]) {
        resolution = CGSizeMake(1536, 2048);
    }
    else {
        resolution = CGSizeMake(640, 960);
    }
    return resolution;
}